| Lat / long: | 37.44307, -108.00675 |
| Primary: | Silver, Gold |
| Tertiary: | Copper, Lead, Zinc |
| Ore: | Argentite, Chalcocite, Chalcopyrite, Galena, Gold, Proustite, Pyrargyrite, Pyrite, Sphalerite, Stephanite |
| Gangue: | Barite, Dickite, Quartz |
| Discovery year: | 1878 |
| Operation type: | Underground |
| Deposit type: | Vein |
| Production size: | Small |
| Development status: | Past Producer |
| First production started: | 1878 |
| Last production ended: | 1921 |
| Host rock: | Cutler Formation;Dolores Formation |
| Host type: | Mudstone,Shale,Sandstone |
| Associated rock: | Porphyritic Rocks--Diorite-Monzonite Porphyry |
| Associated type: | Diorite |
| Structure: | San Juan Uplift, Four Corners Platform, La Plata Dome |
| Tectonic: | Central Cordillera (Southern Rocky Mtns) |
| Alteration processes: | Oxidation Of Cu Sulfides; Formation Of Clay |
| MRDS | D010813 |
| MAS | 80670068 |
| DEP | 10014161 |
| Reference | {Deposit:: ECKEL, E.B., AND OTHERS, 1949, GEOLOGY AND ORE DEPOSITS OF THE LA PLATA DISTRICT, COLORADO: USGS PROF. PAPER 219, P. 73-74, 106-108, PL.18.}{Deposit:: BLM MINERAL SURVEYS MS 2376, 2357, 2378, 2379, 2380, 2381, 2382}{Deposit:: REED, J.R., 1936, REPORT ON THE CUMBERLAND MINE, CUMBERLAND BASIN, LA PLATA COUNTY, COLORADO: UNPUB. ENG. REPT., 2 P.}{Deposit:: Neubert and others, 1992, Mineral Appraisal of the San Juan National Forest, Colorado: USBM MLA 2-92, p. 111, fig. 39; p. 123-125.}{Deposit:: Southwestern Paydirt, no. 694, April 1997, 12.}{Production:: ECKEL AND OTHERS, 1949, P. 107 (AS COMPILED FROM DIRECTOR OF MINE REPTS., USGS/USBM RECORDS, AND PRIVATE UNPUB. ENGINEE* REPT.)} |
| Reporter | Wilson, Anna B., Buckingham, David A., Schwochow, Stephen D. |